package com.zyh.util;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Calendar;
import java.util.Map;

public class JwtUtils {
    private static final String SING="HELLOWORLD";
    /**
     * 生成token
     */
    public static String getToken(Map<String,String> map){
        JWTCreator.Builder builder= JWT.create();
        map.forEach((k,v)->{
            builder.withClaim(k,v);
        });
        Calendar instance = Calendar.getInstance();
        //设置token七天过期Date
        instance.add(Calendar.SECOND,70);

        String token = builder.withExpiresAt(instance.getTime())//指定过期时间
                .sign(Algorithm.HMAC256(SING));
        return token;
    }

    /**
     * 获取token里面的信息，如果验证失败会抛出异常
     * @param token
     * @return
     */
    public static DecodedJWT verify(String token){
        return JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
    }
}
